As a PC gamer I would probably go with Basic because it sounds like it would use the least amount of resources (except third world edition :p). I don't need the aero glass GUI. It sounds cool and all, but it's just a sci fi gimmick and the requirements are insane:
Windows Vista Home Basic is aimed as casual PC users who do little more than surf the Web, check e-mail and create/store/share basic documents, Goffe said. The Home Basic version will not include support for the Aero Glass user-interface effects that will be part of other Vista SKUs.
To get the full Vista experience, the graphics card needs a lot of memory (64MB minimum, 128MB recommended) and must support the complete DirectX 9 API.